By car

Leave the M11 at junction 12 and head into Cambridge along the A603 (Barton Road), turn left into Grange Road. After about 500m Selwyn is on the right, just after the junction with Sidgwick Avenue.
If approaching from the East or West using the A14, by far the best option is to carry on until you can join the M11 southbound at junction 14, proceed south to junction 12, and then follow the instructions above.
There is limited parking available at the College, and limited parking on some nearby side streets. At busy times, e.g. Open Days, the parking will quickly be taken up and we recommend that you use one of the Park & Ride car parks (http://www.cambridgeshire.gov.uk/transport/around/park-ride/). The most convenient one is that at Madingley Road, accessible from the M11 northbound only at junction 13. From there you can take the Uni 4 bus, and get off at the University Library stop in West Road, which is right next to Selwyn.

By rail

Cambridge rail station is well served by trains from London King's Cross, London Liverpool Street, Stansted Airport, Norwich, Peterborough and Birmingham. East Coast mainline services can be accessed by changing at Peterborough. From London, the fastest journey times are from King's Cross, with a frequent non-stop service during the day.
The rail station is a 40-45 minute walk from the College. The Citi 1, 3 and 7 buses connect the rail station to the centre of town, but none of these routes go out towards Selwyn. There is an extensive taxi rank at the station.

By bus

Nationwide buses general arrive at the bus stands along Parkside, the street which runs along the North edge of Parkers Piece: see /bus-station/

By air

Stansted Airport is very convenient for Cambridge, being connected by both direct bus and rail links (journey time about 45 mins).
Heathrow Airport is further away, but there is a regular direct bus link (journey time two and a half hours). To travel by train from Heathrow to Cambridge there are two options: (1) a long tube journey on the Piccadilly line from Heathrow to Kings Cross station, and then by train to Cambridge; (2) the Heathrow Express from Heathrow to Paddington Station, followed by a short tube journey to King's Cross and then the train to Cambridge.